I think the basic functionality can be accomplished using an X-mux, as in the attached patch. I've added oscillator 1 in position 5 so that it will fade smoothly back to position 1. If you want to modulate this "G2 rotor" you can put something into the empty input in the module named "rotor pitch". I sensed a number of possible patch routings in the menus he showed - you can probably recreate most of those in the G2. Also check out the control sequencer for cool LFO-driven value changes (of course you can use whatever module instead of an LFO if you want).

It won't sound exactly like the Solaris - the control input to the mux is blue, meaning that (while it does go into audio range) it doesn't have as good a resolution as the red inputs. Also, the Solaris probably has some other DSP solution for the rotor to create that cool sound. An nice trick anyway - I like to use the x-mux in this fashion every now and then.

Wow! Advanced... Er, could you take a little moment to explain how it works? I think that a value exists somewhere that moves like a reverse saw, but well, this is heavy stuff. Also, where do you adjust the xfade amount?

It's an audiorate DIY charge-reset sawtooth core, not unlike an analog oscillator (charging capacitor). Since the overflow isn't taken into account, the oscillations always have the same sample count and thus don't produce foldbacks (aliasing), but sacrifice tuning resolution, which isn't a big deal here.

In the first version, this drives a set of logic and switches that select the inputs, as well as being converted into triangle waves to perform the crossfading between those.

The second version is far simpler, doing away with that switching stuff. The sawtooth is converted into two unipolar triangle waves, 180 degrees apart, which drive fader modules with the inputs connected to them. Mix together, done.

Edit: These audiorate DIY oscillators and counter circuits (which I invented some time back) are central to all my patches. Eg., the elastic audio patches are brim full of them.

I just bought the G2 and patches like this really gets me excited to learn a lot about modular synthesis! I have a question though - you say it's streamlined to use 7,5% cycles and 9,4% memory - but when I load it into my G2 (expanded, running OS 1.61) it uses 17,0% cycles and 14,1% memory. Am I missing someting here...?

I just bought the G2 and patches like this really gets me excited to learn a lot about modular synthesis! I have a question though - you say it's streamlined to use 7,5% cycles and 9,4% memory - but when I load it into my G2 (expanded, running OS 1.61) it uses 17,0% cycles and 14,1% memory. Am I missing someting here...?

Anyway, thanks for the patch!

/Mm

I have the same percentages, came to the conclusion that it is probably that Tim's is expanded. Don't really understand why your expanded one gives essentially the same figures though as my unexpanded G2...

Not to dis the Solaris but I just love that with a bit of ingenuity and tweaking my low-cost G2 can sound very much the same as several thousand Euro's of most modern synth design. Thanks Tim!

Not to dis the Solaris but I just love that with a bit of ingenuity and tweaking my low-cost G2 can sound very much the same as several thousand Euro's of most modern synth design. Thanks Tim!

Jim

The person who created the Solaris videos went to a lot of trouble to show off features which don't really let you hear the synth's capabilities. All of those oscillator options- they all sounded the same. One would expect significant differences.

I wonder how close Solaris is to actually shipping. Does anyone here know?_________________Free Tibet. Release the Panchen Lama from prison. Let the Dalai Lama return to his home.Last edited by cappy2112 on Wed May 06, 2009 6:29 pm; edited 1 time in total

Pardon my ignorance - what is kernel modules and which would they be in this patch?

About the expansion and polyphony: If I have only one slot activated and have a patch in that slot that use more than 50% cycles I get 8 voices. If I didn't have the expansion I would get 4 voices. Right?

Not to dis the Solaris but I just love that with a bit of ingenuity and tweaking my low-cost G2 can sound very much the same as several thousand Euro's of most modern synth design. Thanks Tim!

Jim

The person who created the Solaris videos went to a lot of trouble to show off features which don't really let you hear the synth's capabilities. All of those oscillator options- they all sounded the same. One would expect significant differences.

I wonder how close Solaris is to actually shipping. Does anyone here know?

Got a chance to talk with John B. and try the Solaris at NAMM this year. Was hard to concentrate on it actually. There was this astounding synthesizer there built by Skot Wiedmann http://www.motusmavis.com/# in the same booth. On a completely different plane from everything else. Very cool to see Don Buchla and Mike Brown meeting Skot for the first time. Sebastian Jaeger from Harvestman was there as well. The booth was intense-Wish I had a picture.
Seems like the Solaris is finished. John wasn't happy with certain aspects of it, kept saying that the filters were unfinished. Sounded good to me, but it's hard to tell with so much noise around. Can't help but think I would prefer the synth with a larger screen and less of the smaller ones - the parameters just go on and on...
Credit to him for not rushing it out and trying to patch it up later.
He'd probably sell you one if you contacted him. I would be surprised if you didn't receive it by July.

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